Clear Bios Password
Milba Vanpatten
Had the same problem. The jumper is under the fan, close to the power button. In my case it was black. You don't have to remove the fan, it hinges up. remove the jumper, close the case, boot the pc, it wil show a warning aboute the internal battery, boot to the os. shutdown, put the jumper back. close case. boot and you wil see the bios password is gone.
I need assistance with my HPE ProLiant DL380 Gen9 server. We do not know what the bios password was set to, so we need to reset it. I have already tried to reset it by removing the CMOS and by booting with position 6 of the maintenance switch set to 'on'. All other documentation I have found online about this issue is in regards to other gens / models. Is the process any different for this specific model? Nothing I have tried has worked thus far.
Thank you for your response. Unfortunately clearing the NVRAM did not resolve the issue. I followed the instructions exactly, got the confirmation screen that the system was being default configured, powered off the machine when prompted, flipped switch 6 back to off, and powered the machine back on. I have tried this multiple times, but the bios password has not been removed. Any additional assistance would be greatly appreciated
This should work, but if it doesn't, see the articleHow To Remove, Clear, Reveal, Unlock or Reset BIOS Security Passwordfor useful utilities: PC CMOS Cleaner, CmosPwd by CGSecurity,!Bios by eleventh alliance and invalidating the CMOS checksum manuallywhile booting from FreeDOS.
Quite often, the password will be set (either in plaintext or hashed) in a separate EEPROM in the computer, so that the ROM for the BIOS has no effect on it. This also means that you can upgrade or reinstall the BIOS and keep your password and settings on there. This is a huge convenience for businesses, who do not disclose BIOS passwords to employees, yet can still remotely upgrade them. You may have to decrypt or re-flash the security EEPROM or another chip to reset the password, as you might have seen in older style Thinkpads for example.
To answer your question, you should research how to clear the password on the specific model you have - that is, of course, provided you own the machine or have full permission to do so by the owner. It may not (and frankly, shouldn't) be possible any more to do so by simply removing the CMOS battery, but neverless its something to try anyhow. In the worst case scenario, you could learn how to reverse engineer the BIOS chip and inject code to reset it for you, if you are not able to do so manually. This is overkill and it much easier said than done, but then again, if you are willing to decompile the binary from the BIOS you might as well get it commercially done for you or just get another board. All the personal examples I've seen of BIOS disassembly have been done for one's own interest, and simply isn't worth the time to learn (especially since, from your question, it appears you want a quick and easy way of wiping the password).
It works, I've had to do that on a Toshiba Libretto 50CT and a Toshiba Tecra 8000. The toshiba maintenance manuals have the pinout listed, I think it's called a Parallel Port Wraparound Connector in there, with the pinout listed in the wiring diagrams section.
Laptop generally save security data in a separated separated from nvram values in an eeprom chip. Sometimes you can hard tamper that eeprom short circuiting its pins to erase its contents or soldering a new blank eeprom, but sometimes... If the BIOS doesn't find certain expected data or checksums in them it will never let you boot. That's the case with Thinkpads. Dunno about Toshibas (with Toshiba BIOSes).
Am I missing something as I've watched the video and it shows the laptop being fixed as the device has done what it is supposed to do and remove the BIOS/CMOS password as it no longer requests a password but instead reports that the BIOS/CMOS configuration settings are not set and you need to go in to the BIOS and set them?
ANYWAYS, was going to build a parallel port bypass device (soldering/twisting wires) but read somewhere about someone just tying some wires together that made me think.... Why not just jumper the port directly?
Using paper clips, a right angle wire cutter (to clip the paperclips shorter/cleanly where needed); I was able to wire it up and get it working. I made a video but need to edit it... The only tricky one was the 1-5-10 triple cable which I wired by having a 2nd wire/paperclip touch the one in the 1-10 port.
Glad I found this thread as I've been trying to reset the BIOS password on a recently acquired Satellite 320CDT. The eBay seller neglected to mention this, but to be fair it was sold as Spares/Repair.
I had tried various things including generic passwords and a "key disc" but that hadn't worked. I had heard about the parallel port hack, but was sceptical. kleung21's photol inspired me to give it a try with paper clips and can confirm it worked for this particular model.
For future reference note where pin 1 is located. Above pics worked perfectly. First time I mirrored it the wrong way as I looked at another guide without pics. No harm was done but it didn't work of course.
It started normally with a Toshiba splash screen and then a password prompt. I knew the user password but not the supervisor password. After messing around with some Toshiba tools (trying to clear the password) I was locked out completely so needed to do this "hack" to use this laptop again. But even then it will show the password prompt but it will turn the laptop off after 3 incorrect passwords.
Thanks! Ive got relatively dead toshiba (batteries removed etc but external power) thats gives me nothing. Ive tried this but thought I may have wire pins wrong. Thanks for confirming your experience.
I would be stoked if they'd rely implemented "security" and have the pwd in non volatily storage.
How long have you removed all power sources (PSU + cmos bat)? It can be that still some caps on the board hold up the power enough if you do not wait long enough.
Step3:
Move the CMOS jumper to the clear position, this is usually done on MSI boards by moving JBAT1 from it's original 1-2 position to 2-3 position as demonstrated in the photo below.
If you are not sure or have a non MSI board you must find the correct jumper in your motherboard manual.
*Note to all nForce2 users, your board usually has a special "safe mode" jumper for the FSB. You should also set it to the safe setting in case you have been overclocking since the normal clear CMOS jumper will not reset the frequency settings on these boards. You may refer to your user manual.
Normaly if you unplug the system from the wall, and then take out the bios battery for a few minutes.
Then it basicly should reset the bios to factory default.
Unless the bios password is hard stored on an additional chip.
In the mean while we might look arround if we can find some method to fix this.
It would ofc be rediculous if you loose your bios password, that you are unable to reset it back to factory defaults.
Allthought "if im right", there is an option in the bios, that exaly says "password clear" and if that option is set to disabled.
The bios password will indeed not be cleared after Cmos reset.
I think that were your problem sits.
I have a toshiba c655d-s5518, on that computer there is a jumper labeled xxx just above the DDR3 memory modules (towards battery), if you short the jumper while powering on it clears the BIOS password. on Some other C655D the jumper is labeled B500.
there are 2 pins next to either the ram or the cmos battery. mine was next to the ram. youll see them next to the ram all alone. turn the computer off. take a flathead scredriver and touch the two pins. hold it there while you power on the computer. the computer should turn on and then shut down. now power it on normally and the password should be gone. ive done this in a dozen c655 and c855s
pull out the bios ic name with winbond with 8 pins put it in the programmer download the bios file from toshiba webste extract the file there will be file with extension rom or bin try to make me picture i will guide you then programme the ic it will be claire i am very familiar with this
1. Starting with the computer fully off, turn it on by pressing and releasing the power button. Immediately and repeatedly tap the Esc key, until the message "Check system. Then press (F1) key" appears on the screen.
For some reasons it could happen that no PC Serial No. and Challenge Code will displayed instead of "Not Certified" appears. In this case remove the AC-adapter and the battery for a short time and try it again.
Hi, we have an Intel NUC D54250WYKH & we accidentally disabled all the USB ports when in the BIOS. When we restarted the NUC, our USB keyboard is no longer detected and we cannot get back into the BIOS or boot to the OS or external media/devices.
Unfortunately, none of the methods we tried have not worked.
Is there another way to clear/reset the BIOS so that we can access the Intel NUC once more? Is there manual way to short PINs on the motherboard or another program we can use to reset the BIOS?
Thx for your reply. Unfortunately, we also tried the moving of the jumper pin to pins 2-3 and also with no jumper pins at all but that only stated that it has cleared the admin password. When the system reboots, we still cannot access any of the USB ports and thus cannot use F2 to access the BIOS.
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